Oil burner



Nov. 25, 1930; A. A. LAPOINTE OIL BURNER 2 Sheets-Sheet i Filed April 20, 1925 dizzy/1&2.

Nov. 25, 1930. A. A. LAPOINTE 1,782,730

OIL BURNER Filed April 20, 1925 2 Sheets-Sheet 2 Patented Nov. 25, 1930 UNITED. STATES PATENT oFFIcE 7 ALBERT A. LAPOINTE, or WEST HARTFoRn, CONNECTICUT, ASSIGNOR To THE SILENT GLOW OIL BURNER CORPORATION, or HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT OIL BURNER Application filed April 20, 1925. Serial No. 24,342.

This invention relates to the class of devices that are adapted for installation infurnaces, stoves and the like for use ofoll or similar fluid as a heating medium, and an 5 object of the invention, among others, is the production of a device of this class that shall be simple in construction, efficient in operation andthat may be readily lighted and also that may be readily cleaned when occasion 0 requires.

One form of a burner embodying this invention, and in the construction and use of which, the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in wh1ch Figure 1 is a view in elevation of an ap paratus embodying my invention, a-portion onlyof a supply tank and of a furnace being indicated,

Figure 2 is a plan View of. a portion of the burner. 4

Figure 3 is .a view in side elevation of said burner with parts broken away to show con- SlJIlICtlOII, 1 s

'Figure 4t (Sheet 1)] is a detail view, scale enlarged, showing the construction of the damper.

Figure 5 is a plan view showing the con struction-of said damper, and in section on plane denoted by the broken line 55 of F igure 4:.

In the accompanying drawings the numeral 5 indicates a portion of a supply tank 35 and 6 a portion of a furnace, both of which may be of any ordinary type of construction. The burner is located within the furnace and is connected with the supply tank by a system of pipes that may embody any suitable arrangement, but which form no part of the present invention, and a detailed description y is therefore omitted, it being suflicient for the purposes of this application to state that this apparatus includes a regulating device 7, including a feed pipe 8 extending to a feeder 9 that comprises a connection with the pipe 8 and with two supply pipes 1011.

A burner, generally designated by the numeral 12, is mounted on supports comprising ;inlet pipes 13,

preferably three in number and to which legs 14 are adjustably at-- tached, said inlet pipes being connected as by branches 15 with the supply pipe 11.

The burner comprises a plurality of. fuel troughs 16, .17 and 18, concentrically arranged, and the inlet pipes 13 preferably communicate with dilferent portions of the outer fuel trough 16, and at points evenly spaced therein, said branch pipes entering preferably through the bottom of the trough. Branches 1920 extend from the supply pipe 10, two

of'said branches 19 extending to diametrically opposite sides of the fuel trough 17, and the branch 20 extending to the fueltrough 18.

The disclosed burner is of the so-called combustion tube, fuel trough type and,'as inthe case of similar burners, the fuel troughs are open as to the upper portion, that is, no wicks or similar devices are employed for ignition'purposes, the oil or other liquid fuel being vaporized within the troughs by the heat of combustion, and the vaporized fuel rising therefrom being commingled with air and burned within the overhead combustion chambers or flues 21, 22 and 23. Each flue comprises a pair of perforated sheet metal pieces spaced apart, the bottoms of said pieces resting upon the shoulders within the fuel troughs, these pieces of sheet metal being bent into cylindrical tubular form and being retained in position by ,the edges of the trough projecting above said shoulders. The inner wall 24 of the inner flue 21 forms an air flue 25' through which air is supplied'to the tops of the flues 21, 22, and 23 for the purpose of aiding combustion.

jA damper 26 is placed in this flue 25, preferably near the upper end thereof, such damper being secured to the lower end of a damper shaft 27 rotatably supported in a cross piece 28 extending across the top of'the air flue 25. The upper end of'the shaft 27 supports a deflector 29 that is preferably in the form of a hood overlying the flues 21, 22 and 23, said deflector being preferably of concavo-convex form with the concave side toward the upper ends of the flues, and this deflector is provided with perforations 30.,

By means of .this deflector the heated air and other products of combustion are broken up and disseminated to all parts of the furnace, so that air currents and eddies are prevented and the heat is evenly distributed within the interior of the furnace, and a thorough and efficient combustion is obtained. Ports 31 lead from each of the inlet pipes through the base 32 of the burner-into the several fuel troughs, and the inlet pipes 13 are secured to the basein line with said ports, the lower ends of said pipes having drip cups 33 removably secured. thereto. The branches 15, 19 and 20 extend laterally relatively to the inlet pipes and are connect- 3d therewith preferably near the bottom, as by means of Ts 34. This provides a construction gby means of which ready access ma be had to the inlet pipes which may be easily opened from end to end for the insertion of a cleaning rod or other implement to remove any obstruction that may accumulate within the pipes, and the drip cups 33 afford a meansfor collection of any deleterious matter. In the operation of the burnor, as the liquid fuel is vaporized in the fuel trough, carbonized fuel tends to accumulate through long usage, particularly in the fuel supply opening 31 and to someextent within the supply pipe 13, as the heat of combustion tends to raise the temperature of the pipe, as well as that of the, base member 32," to a point where the fuel is vaporized by contact with the walls thereof. This tends to form accumulations on the walls of the pipe and the-supply opening and to restrict the fuel supply passages through these accumulations and by particles of the carbon which are detached and fall into the pipe. The cup 33'constitutes a trap into which detached particles of carbon tend to gravitate as well as water or other foreign substances which pass over with the liquid fuel. When the cup is removed, such foreign accumu= lations can be withdrawn from the cup and the accumulations in the fuel supply passage and the pipe quickly and effectively cut out and removed by a cleaning rod, as described.

This invention contemplates means for priming the burners by a priming fluid, as gasoline, introduced through the supply pipes 1011. The'level of the oil in the fuel troughs is controlled by the regulating device 7 in a manner that will be understood, such level being indicated by the dotted line 35. In order to effect this purpose a stopcock 36 is located in the pipe 8, and means as a priming cup 37, is connected with one of the pipes 10 or 11, the pipe 10 having such connection in the arrangement herein shown.

lVith this arrangement, the burners being -extinguished, the stop-cock 36'is closed, thus preventing flow of oil-from the device 7 to the supply pipes 10 and 11. The valve 38 appurtenant to the priming cup 37 is now opened. and the valves 39 and 40 for controlling flow of fuel through the pipes 10 and 11 are opened. Priming fluid being now poured into the cup 37 will readily mix with the fuel in the pipes 10 and 11 throughout their entire length and within the fuel troughs. The cup 37 will be located so that the liquid level therein will indicate when the proper level within the fuel troughs will have been attained as denoted by the broken line 35. Flame being now applied to the mouths of 'the fuel troughs, the fuel therein will be readily ignited by reason of the mixture of the priming fluid, and the stop-cock 36 being now opened the operation of the burner will continue until extinguished, and this extinguishing may be effected automatically, by any of the devices in common use for such purpose, or may take place from any other intentional cause. It will be understood that the branches 19 and 20 include vertically extending pipes communicating through ports in the base with the bottoms of the fuel troughs 17 and 18 and that the lower ,ends of the vertically disposed portions of said branches are provided with drip cups andmeans for cleaning out the pipes as has been heretofore explained with respect to the pipe 13.

In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together with the device which Inow consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by othermeans and applied to uses other than those above set out. 1

I claim 1. A burner comprising a trough with an enclosed burner flue rising therefrom and opening at its upper end, an air flueenclosed within the burner flue, a damper to regulate fiow of air through said air flue, and a deflector-overlying'the burner flue and conn iacted with said damper for operation there- 0 2, A burner comprising'a trough with an enclosed burner flue rising therefrom and opening at its upper end, a shaft rotatably mounted in said flue, a damper secured to said shaft to control flow of air through said flue, and adeflector secured to said shaft and overlying said burner.

3. A burner comprising a trough with an enclosed burner-flue rising therefrom and opening at its upper end, an air'flue enclosed within the burner flue, a damper to regulate flow of air through said air flue, and a. perforated deflector overlying'the' burner flue and connected with said damper-for opera tion thereof. 1 a

4;. A burner comprising a plurality of annular concentric troughs, with enclosed burner flues rising from each of said troughs and opening at their upper ends, an air flue enclosed within the central burner flue, a damper at the upper end of said flue to regulate flow of air through said, air flue, and a deflector overlying all of said bufner flues and connected to said damper for operation thereof.

5. A burner of the class described having a base member provided with a fuel groove therein, spaced, perforated, tubular wall members supported by said base-member presenting between them a combustion chamber above said groove in which the. vaporized fuel is adapted'to be burned and presenting. also an air flue within the inner tubular member, an adjustable damper near the top of ,said flue to regulate the escape of air through the top thereof, and a deflector above said ber.

' ing and in line with of the groove,

said pipe may be opened tubular members extending over the outlets from said air flue and said combustion cham- 6. A humor of the class described having abase member provided with an open fuel groove therein, spaced, perforated, tubular wall members removably supported on said base member presenting between them a combustion chamber above the fuel groove, in which chamber the vaporized fuel is adapted to be burned, a fuel supply opening in the bottom of the groove, an upright supply pipe connected to the base member and said openthe latter, a cup constituting a trap removably threaded to the bottom of said pipe and closing the bottom thereof, and a lateral fuel supply branch pipe connected to said upright pipe above said cup, whereby said pipe may be opened at its lower closed end and cleaned either through said trough end or lower end.

7. A burner of the class described having a basemember withan open fuel groove therein, spaced, perforated, tubular wall members removably supported on said base member presenting between them a combustion chamber above said fuel groove, in which chamber the vaporized fuel 1s adapted to be burned, a fuel an upri ht su 1 i e connected to the base mei nber zf d sdi 'opening and in line with the latter, a removable fuel supply opening in the bottom of the supply opening in the bottom A groove, a supply pipe connected to the base member and said opening and in line with the latter, a removable closure for the opposite end of said pipe, and a lateral branch pipe connected to said supply pipe. intermediate its ends, whereby said supplypipe may be opened and, together with said fuel supply opening, cleaned through the trough end of the pipe or opposite end thereof.

ALBERT A. LAPO IN TE. 

